52 lines
1.3 KiB
Plaintext
52 lines
1.3 KiB
Plaintext
/*
|
|
Copyright 2018 0KIMS association.
|
|
|
|
This file is part of circom (Zero Knowledge Circuit Compiler).
|
|
|
|
circom is a free software: you can redistribute it and/or modify it
|
|
under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
circom is distributed in the hope that it will be useful, but WITHOUT
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
|
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
|
|
License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with circom. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
function pointAdd(x1,y1,x2,y2) {
|
|
var a = 168700;
|
|
var d = 168696;
|
|
|
|
var res[2];
|
|
res[0] = (x1*y2 + y1*x2) / (1 + d*x1*x2*y1*y2);
|
|
res[1] = (y1*y2 - a*x1*x2) / (1 - d*x1*x2*y1*y2);
|
|
return res;
|
|
}
|
|
|
|
function EscalarMulW4Table(base, k) {
|
|
var out[16][2];
|
|
|
|
var i;
|
|
var p[2];
|
|
|
|
var dbl[2] = base;
|
|
|
|
for (i=0; i<k*4; i++) {
|
|
dbl = pointAdd(dbl[0], dbl[1], dbl[0], dbl[1]);
|
|
}
|
|
|
|
out[0][0] = 0;
|
|
out[0][1] = 1;
|
|
for (i=1; i<16; i++) {
|
|
p = pointAdd(out[i-1][0], out[i-1][1], dbl[0], dbl[1]);
|
|
out[i][0] = p[0];
|
|
out[i][1] = p[1];
|
|
}
|
|
|
|
return out;
|
|
}
|